245380040 has 32 divisors (see below), whose sum is σ = 584583480. Its totient is φ = 92378112.

The previous prime is 245380021. The next prime is 245380043. The reversal of 245380040 is 40083542.

It can be written as a sum of positive squares in 4 ways, for example, as 245298244 + 81796 = 15662^2 + 286^2 .

It is a super-2 number, since 2×245380040² = 120422728060803200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245379991 and 245380009.

It is not an unprimeable number, because it can be changed into a prime (245380043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179747 + ... + 181106.

Almost surely, 2^245380040 is an apocalyptic number.

245380040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245380040 is an abundant number, since it is smaller than the sum of its proper divisors (339203440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245380040 is a wasteful number, since it uses less digits than its factorization.

245380040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360881 (or 360877 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 245380040 is about 15664.6110708182. The cubic root of 245380040 is about 626.0558494201.

The spelling of 245380040 in words is "two hundred forty-five million, three hundred eighty thousand, forty".